نتایج جستجو برای: double sand lenses
تعداد نتایج: 282103 فیلتر نتایج به سال:
introduction: some fungi such as aspergillus, alternaria, cladosporium and fuzadium can peneterate matrix of contact lens. alternaria is a saprop and a pathogen in plants which is rarely seen in human being. this paper reported one case of contact lens contamination with alternaria in human. case report: the patient is a 24 year old woman who had used contact lens for 7 months. since she was on...
This paper focuses on the face stability analysis of Double-O-Tube shield tunnel. This kind of analysis is significant to ensure the safety of workers and reduce the influence on the surrounding environment. The key point of the stability analysis is to determine the supporting pressure applied to the face by the shield. A collapse failure will occur when the supporting pressure is not sufficie...
This review presents a systematic perspective on the development of micro-optofluidic lenses. The progress on the development of micro-optofluidic lenses are illustrated by example from recent literature. The advantage of micro-optofluidic lenses over solid lens systems is their tunability without the use of large actuators such as servo motors. Depending on the relative orientation of light pa...
Broadband double-ridged guide horn (DRGH) antennas are extensively used in antenna measurement and electromagnetic compatibility interference testing, especially the 1–18 GHz DRGH which is widely accepted as a standard for this band. Certain deficiencies radiation patterns have been identified corrected by several authors, but use was still limited to frequency The incorporation of absorber mat...
Saltation is an important geological process and the primary source of atmospheric mineral dust aerosols. Unfortunately, no studies to date have been able to precisely reproduce the saltation process because of the simplified theoretical models used. For example, sand particles in most of the existing wind sand movement models are considered to be spherical, the effects of the sand shape on the...
In extreme scattering events, the brightness of a compact radio source drops significantly, as light is refracted out line sight by foreground plasma lenses. Despite recent efforts, nature these lenses has remained puzzle, because any roughly round lens would be so highly overpressurized relative to interstellar medium that it could only exist for about year. This, combined with lack constraint...
The authors have designed and produced extended-wear contact lenses for rhesus monkeys. High-plus lenses to correct neonatal aphakia as well as lenses dyed black for use as occluders to treat amblyopia have been evaluated. Four infant monkeys fitted with soft lenses have successfully worn these extended-wear lenses almost continuously throughout their first year of life. These experiments demon...
OBJECTIVE The aim was to report three cases of severe bilateral epithelial edema (central corneal clouding [CCC]) in association with ClearKone SynergEyes hybrid contact lenses for the vision rehabilitation of keratoconus. METHODS Retrospective case series of six eyes of three patients that developed CCC with ClearKone SynergEyes hybrid contact lens wear shortly after beginning to wear those ...
Introduction: Traumatic brain injury can cause visual dysfunction (if not treated with therapy) and it hinder a patient's rehabilitative progress. Screening for Visual processing assessment to identify symptoms in TBI patients at the HCFMUSP Neurology Clinic. Previous literature presents common that were identified these patients, such as: field loss, double vision, posture balance difficulties...
Optofluidics is a rapidly growing versatile branch of adaptive optics including a wide variety of applications such as tunable beam shaping tools, mirrors, apertures, and lenses. In this review, we focus on recent developments in optofluidic lenses, which arguably forms the most important part of optofluidics devices. We report first on a number of general characteristics and characterization m...
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